Bump ruff from 0.1.8 to 0.1.9 (#338)

dependabot[bot] · web-flow · commit 436f58282795 · 2023-12-25T22:38:58.000+01:00
diff --git a/requirements_testing.txt b/requirements_testing.txt
@@ -5,7 +5,7 @@ pylint==3.0.3
 pytest==7.4.3
 pytest-cov==4.1.0
 pytest-icdiff==0.9
-ruff==0.1.8
+ruff==0.1.9
 setuptools==69.0.2
 tox==4.11.4
 tox-gh-actions==3.1.3
